Electrical Level 3 - Module 10 Questions and Answers | Latest Version | Graded A+

Electrical Level 3 - Module 10 Questions and Answers | Latest Version | Graded A+ What is the purpose of voice, data, and video (VDV) systems in a building? VDV systems provide essential communication and connectivity infrastructure, supporting telecommunication, internet, and multimedia functions. What does "structured cabling" refer to? Structured cabling is a standardized system of cables and components used for transmitting voice, data, and video signals throughout a building. What is the role of fiber optic cables in VDV systems? Fiber optic cables provide high-speed data transmission over long distances with minimal signal loss and electromagnetic interference. How does a Category 5e (Cat 5e) cable differ from a Category 6 (Cat 6) cable? Cat 5e cables support speeds up to 1 Gbps, while Cat 6 cables are designed to handle higher speeds and frequencies, supporting up to 10 Gbps over shorter distances. 2 What is the function of a patch panel in a VDV system? A patch panel provides a central point to organize and connect incoming and outgoing cables, making it easier to manage and troubleshoot the system. What is an RJ45 connector used for? An RJ45 connector is used to terminate Ethernet cables, allowing them to connect to networking devices like computers, routers, and switches. Why is signal attenuation a concern in VDV systems? Signal attenuation refers to the reduction in signal strength over distance, and it can lead to slower data transmission or loss of quality in voice and video signals. What is a POE (Power over Ethernet) system? POE systems allow Ethernet cables to transmit both data and electrical power to connected devices, such as IP cameras and phones, reducing the need for separate power lines. How does a coaxial cable function in VDV systems? A coaxial cable is used to transmit video and data signals, often seen in television systems and internet connections, due to its ability to minimize signal interference. 3 What is a wireless access point (WAP) used for? A WAP allows devices to connect to a local area network (LAN) wirelessly, providing internet or network access without needing physical cables. What is the difference between analog and digital signals in VDV systems? Analog signals vary continuously, while digital signals are transmitted as discrete binary values, offering better clarity and resistance to noise in data transmission. What is the purpose of an Ethernet switch in a VDV network? An Ethernet switch directs data packets between devices on a network, ensuring efficient communication and preventing data collisions.